Illustration 54 g02868180
Typical view of the P1 pin locations for the
temperature sensors
(19) Air inlet temperature sensor signal
(20) Air inlet temperature sensor ground
(79) DOC inlet temperature sensor ground
(80) DOC inlet temperature sensor signal
(81) Exhaust gas temperature sensor ground
(82) Exhaust gas temperature sensor signal
(83) DPF inlet temperature sensor ground
(84) DPF inlet temperature sensor signal
Table 94
Troubleshooting Test Steps
Values Results
1. Check for Diagnostic Trouble Codes
A. Connect to the electronic service tool.
B. Turn the keyswitch to the ON position.
C. Access the “Active Diagnostic Code” screen on the elec-
tronic service tool.
Wait at least 30 seconds in order for the diagnostic codes
to become active.
D. Check if any of the diagnostic codes listed in Table 93 are
active or recently logged.
Codes Result: A -3 diagnostic code is active.
Proceed to Test Step 2.
Result: A -4 diagnostic code is active.
Proceed to Test Step 3.
Result: A 3242-0 diagnostic code is active.
Check that the DPF inlet and DOC inlet temperature sensors
are installed in the correct location.
Check all electrical connectors related to the DPF inlet tem-
perature sensor circuit. Refer to Troubleshooting, “Electrical
Connectors - Inspect”
If the connectors are OK, replace the DPF inlet temperature
sensor. Refer to Disassembly and Assembly, “Temperature
Sensor (DPF) - Remove and Install”.
Result: If a diagnostic code is logged but not currently ac-
tive, the fault may be intermittent.
Refer to Troubleshooting, “Electrical Connectors - Inspect” in
order to identify intermittent faults.
(continued)
194 UENR0612
Circuit Tests
This document has been printed from SPI2. NOT FOR RESALE
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